improving commandline documentation/help

hello cabal devs, i am willing to put a bit of time into improving the help texts of cabal-install. some questions: 1) nobody else is working on this, right? is there risk that it interferes with other's work? (i'd basically touch Distribution.Simple.Command and the different fooCommand's in both Setup.hs's) 2) is there a specific reason that the help texts currently are so short, other than lack of time/focus on functionality? pending large changes or smth? 3) is there a policy to keep commits touching Cabal and cabal-install subdirectories separate (for git-subtree purposes, for example)? Lennart